Fume-destroying composition.



UNTTED STATES PATENT @TTTQE STEWART W. YOUNG, OF PALO ALTO, CALIFORNIA,ASSIGNOR TO GLOBE CHEMICAL WORKS, OF SAN FRANCISCO, CALIFORNIA, ACORPORATION OF CALIFORNIA.

FUME-DESTROYING COMPOSITION.

No Drawing.

: compositions.

In explosions of dynamite and similar explosives, the noxious gaseswhich remain appear to consist largely of What are called nitrous oracid fumes, and a very small amount of unburned or partially burneddynamite.

The object of the present invention is to provide a composition whichwill not only effect the neutralization of the nitrous or acid fumes,but will also result in the ultimate combustion of the explosivematerials so that there will be no unburned or partially burneddynamite. To effect this result I employ a mixture of ammoniumcarhon-ate and a suitable oxygeni'zing agent. Under the conditions ofthe explosion, the oxygen becomes available for the combustion of theminute particles of'unburned dynamite.

I have found by a series of experiments extending over a considerableperiod of time and under actual Working conditions, especially inseveral of the mines of Nevada, that by using a cartridge containing amixture of ammonium carbonate and a carrier Specification of LettersPatent.

Patented Dec. 12, 1911.

Application filed May 4, 1911. Serial No. 624,952.

of oxygen, the gases resulting from the eX- plosion are sweet, andinoffensive. Among the'carriers of oxygen With which I have operated andwhich have done the Work successfully is potassium bichromate. I havealso found it advisable under some circumstances to use a smallproportion of gum camphor, say 2%. These various ingredients are mixedapproximately in the proportion of 65% ammonium carbonate, 33% potassiumbichromate and 2% of gum camphora Inpractice, a cartridge or capsulecontaining the composition is placed in the blast hole with theexplosive and the blast discharged in the ordinary Way.

Having thus described my invention What I claim and desire to secure byLetters Patent is- 1. A fume destroying cartridge containingapproximately two parts of ammonium carbonate to one part of potassiumbichromate.

2. A fume destroying cartridge containing approximately 65% of ammoniumcarbonate, 33% potassium bichromate and 2% gum camphor.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing Witnesses.

STEWART IV. YOUNG.

Witnesses:

NEWTON GRAY, C. C. WALKER.

